Twisting machine



Aug. 1932. w. H. WATSON TWISTING MACHINE Filed Dec. 24, 1931 INVENTOR Flg 2 K]? Waiaom ATTORNE Y Patented Aug. 23, 1932 'rwrs rlno Junonmn v I Application fi1 ed December 24, 9a1, s ria1no ssaoea'a u mi Great time; April 21, 1931;.

4 This iiiveiition relnies' t'o twis ting niachines "either ofthe' cap; ring, or flyer'type, of the hind having spindles both before and after thejfeed rollers the invention having forF-its principal object-to nieetthe' present day demtna for' m'achines giving increased production. and at the same time"a better quality; o'fwork?" f -Iti'sia compar'ativelyeasy matter'to increase production "atthe expensef'or the qualityfof-the product; while it is equally easy w improve the "product at the expense of the eutput; but to achieve both is extremev1y'diirieultiz j Specifically, the invention aims, primarily, to secure materially higher spindle speeds than have beenpossiblehitherto',"secondly, to increase considerably the number of 1 turns put into the yarn, thirdly, to secure greater accuracy in the twist imparted to theyarn tharfis'obtain'able by machines'now in use, 'fourthly; to reduce the number of operations performed by an operative after a stoppage, and -fifthly, toeli'minate the personal equation'whenwrapping the yarns on the feed rollers and also when setting the machine in motion.

Former proposals 'to increase the output of a machine by putting twistinto the yarn both before and a fterthe feed rollers, have not taken into 'accountorhave not provided for all the factors essential to the achievement of the results contemplated by this invention.

It has been found that to secure absolute uniformity in the twist necessitates obtaining a more positive hold on the yarn between the two rows of spindles and also better driving adhesion between the feed rollers and the yarn than ispossible by merely nipping the yarn frictionally between the feed rollers, and, the yarn must be set up when the feed rollers andspindles of the appropriate spindle unit are stationary.

-With the present invention, therefore, these desiderata which are essential to an improvement in the quality of the product are combined with those factors which make for increased output; advantage being taken of the known arrangement of open-ended and also ofthe known method of braking the spindles to arrest themsimultaneously with the stoppage'of' the feed rollers; 1 According tothe invention'a twisting machine of the kind referred tois provided with open-ended feed rollers whereof the lower feed rollers are each positively driven and 50 disconnectible from its {driving means and each cooperates positively with the yarn which is wrapped'completely therearound in addition'to being nipped between the upper and lower'feedrollers each upper feed roller is also p'royided with means for elevating it bodily co-actingwith means for disconnecting simultaneously the corresponding lower feed roller-from its drive and arresting said roller. and interconnected braking means actuated by the elevation of" each upper feed roller are provided for stopping the spindles ap; propriate thereto simultaneously with the elevation of the upper feed roller and with the disconnection of the lower feed roller. in order to enable' the yarn to be set vup after a breakageor when starting up.

Means .areprovided for maintaining' each of the upper feed rollers positively in an ele- 8o vated' posiudn while the thread is being wrapped once or twice around the correspondinglower feed roller; and upon the lowering of an upper feed roller, after the thread has been wrapped on the corresponding lower feed roller, the re-engagement of said lower feed roller with its driving means and the re-starting of the spindles occurs simultaneously with the establishment of frictional driving contact between the upper feed roller and the thread wrapped on the lower feed roller. v

Thefeedrollers may be mounted so as to rotate either normal to or at an angle to the vertical plane of the machine, or they may be parallel to the line of the machine.

The invention is illustrated by way of example in the accompanying drawing in which many parts are omitted which are, not essential to the understanding of the invenand the whorl 9 ofleach fronfi'spir'idle witli a similar flange 10. I

11 is a continuous beam extendingfor-the length of the machine upon which heam there are bolted a series of'fi'angedcastings I2, dn'e opposite each pairofbaek and front: spindles,

' whereofw each casting. is. integralat bottom with a tubular-housing or: bearing 13in which j'is receivedthe rforwardly extending arbo'rl4 0f a lower. feed. roller,v 15; said arbor 14 being slidable axially in said bearing l3 and also axially: through .-a:dri}}i ng.pin ion .or-worm 16 between which; and, a. collar; .17. secured; ,at

the, nner, end attend -1 11 .0 there .iseonfin a coiled freturn springu18, .fllheppillion-s, 01' worm .16 .me'shes;witli, a gear onworm. wheel 19 carried by. a driving. shaft .20 wherefrom the lower. feed rollers .15 receive their rotary motion. Any. other suitable type ;ofgearing may of course be employediif desired.

.Theworm 16. is. integral with, or may be secured upon, a sleeve 21 which has also ,se

cured to it, on is, integral .with, onemember 22 .of a serratedor.toothed-glutch; whichabuts ga sta n -j fi med m .the fear end of the housing or, bearing 13, the OthGIIJBSmY- ber 24 of-said clutch, being. of smaller diameter than the rnembe r. 22 and being accommodated within a recess25, in the housing 13, said clutchmember 24 beingpinned or other' wise suitably secured. to the arbor- 14.

Each upper feed roller26 .is mounted .upon an arbor 27 secured toor integral with the forwardly projecting arm 28 ofabell-crank levenarticulated at 29 to the head of a stem 30 projecting upwardly from the lower feed roller. arbor bearing 13, the otheror upwardly projecting ,arm 31 ofsaid bell-crank lever forming a hand lever The arm-31 of each belI-crank lever is fitted with a trigger lever 32-fulcrumed thereto at 33 and cranked or'oi hset at its upper end so as to. be in alignment with the armor hand lever .31, said trigger lever 32 being formed with a right-angled toe piece 34 adapted to be engaged with a lug 35 integral with. ajfix'ed collar 36 located on the pivotal axisor stud 29. of the bell-crank lever. A spring 37 tends to urge the trigger lever 32.. away from the hand piece 31.

Against the flange 8 on each spindle 1 is adapted to press (in known manner) the pad 38 of a frictional brake lever 39 from which there extends upwardly a spring blade 40 ter levers 43.is connected bymeans of a'rod I to a boss 455 11 the :corresponding arm 28 supporting the upper feed roller 26, a spring 46'b'eii1g confined between each brake lever 43 and a .washer:.47 and 1ocknuts 48, 48, screwed on to the lower end of the rod 44, whereby adjiistment of the spindle braking means can be effected. v

Each of the aforesaid adjustable stops 41 takesinto a. lug 49,,formedon a right angled arm 5.0. pivoted, at 51 to a rearwardextension 52 of thestem 30,;the upper member of the arm. being, located in the path .ofmovement of astud or, pin 53 carried-by a rearar extension .54, ofth'e armf28 o fthe belli "H In rear of each lower feedQrOlIer 15 there s rr n ed e er fiet taietfifi t ho ie e 3, al-mi e. a d but n fa s nta fi ngw t e b i e-te e arm55 QeXtending upwardly parallel with andjclose to the arm 28 of the bell-cranklever and terminating in a slightly culfvedrend 58 against the underside of whichzbears a stud or .pin,59 fixed to the arm 28. i It-zWill be apparent that when handle 31 andrtriggerilever 32 are grasped and moved angularly. backwards (as shown by dotted lines Figure 1)1to elevate.an .upper feed ro ller- 26,,the stop or pin,59 on arm 28 will .cause the-upper end. 58 of arm 55 to move forwards and thereby to pressthe abutment'face '57 against the lower feed roller 15 which, together with the arbor14 willbe moved axially forwards and disengage clutch members 22, 24, the pressure and friction on the rear face of the lower feed roller 15 being suflicient to stop rotation of the roller.

In Figure 2 the path of the yarn or thread is seen at A. From each bobbin5 the thread passes over traverse guides such as 60 thence under each upper feed roller 26 over traverse guides such as 61, being also wrapped round each lower feed roller 15 (when stopped as just described), and thence throughguides such as 62 to bobbins 6.

Upon the lowering of an upper feed roller 26, after the thread has been wrapped on the corresponding lower feed roller 15, the reengagement of said lower feed roller with the clutch member 22 and driving means 16,- 19, 20, occurs simultaneously with theestablishment of frictional driving contact between the upper feed roller 26 and the thread wrapped on the lower feed roller 15. Similarly, theco-operation between the elevating means for the upper feed rollers, the means for arresting the lower feed rollers, and the means for arresting the spindles is such that with the commencement of rotation of the lower feed IOHCIj COIICQIIIGdL' dle unit commence to rotate simultaneously when"rbeing setiiinfimotionf or are arrested simultaneously when wrapping on is necessary.

Instead of projecting forwardly at right angles to the vertical plane of the machine, as shown, the arbors supporting the feed rollers 15 and 26 may extend at any other convenient angle, or they may be parallel to the line of the machine.

What I claim is l. A twisting machine for yarns and the like, including spindles carrying bobbins and also including upper and lower feed rollers co-operating with said spindles to feed said yarns and the like to said bobbins, characterized by a series of individual upper feed rollers and a co-acting series of individual lower feed rollers, each upper feed roller and each lower feed roller being mounted on an arbor whereof one end is unobstructed by a bearing, means to elevate bodily each upper feed roller, means to maintain in each upper feed roller positively in an elevated position, each lower feed roller being driven positively, and means associated with each upper feed roller to disengage the corresponding lower feed roller from its driving means and arrest said lower feed roller when said upper feed roller is elevated.

2. A twisting machine for yarns and the like, including spindles carrying bobbins and also including upper and lower feed rollers co-operating with said spindles to feed said yarns and the like to said bobbins, characterized by a series of individual upper feed rollers and a co-acting series of individual lower feed rollers, each upper feed roller and each lower feed roller being mounted on an arbor whereof one end is unobstructed by a bearing, means to elevate bodily each upper feed roller, means to maintain each upper feed roller positively in an elevated position, each lower feed roller being driven positively, means associated with each upper feed roller to disengage the corresponding lower feed roller from its driving means and arrest said lower feed roller when said upper feed roller is elevated, and means co-operating with said elevating means and with said spindles to stop a spindle simultaneously with the elevation of the corresponding upper feed roller.

3. A twisting machine for yarns and the like, including spindles carrying bobbins and also including upper and lower feed rollers co-operating with said spindles to feed said yarns and the like to said bobbins, characterized by a series of individual upper feed rollers and a coacting series of individual lower feed roller-s, each upper feed roller and each lower feed roller being mounted on an arborr whereofone endis unobstructed by a bearing, each arbor extending forwardl of themachine, means to elevate bodily each upper feed roller, means to maintain each upper feed roller positively. an-elevated position,

zeachlower feed roller being driven positively,

means associated witheaoh upper feed rolleiito disengage the corresponding lower feed roller ,from its driving means and arrest said lower deed roller-when said upper feed roller is1elevated, and means co-operating, with said elefyating means and with said spindles to stop alspindle simultaneously with the eleva- 'g-tion of the corresponding upper .feed roller.

r .4. In a twistingmachine for yarns-and'the like,- inv 'combination rotary spindles carry- ;ing bobbins, means for v'arres ting rotation of said spindles,- an upper series of ,feed roll- ,ers, a lowerser-ies of-feed rollers, a beam sup- :porting said teed rollers, each of said rollers being unobstructed by a bearing at one;end and being-disposedeach -with its axis; at an angle to said beam driving means for said lower feed ,rollers, ,said lower feed 'rollers .having ,yarn ,wrappedtherearound and being -.disengageable from; said driving means, =means'for elevating each of said upper fwd rollers and for, simultaneously. disengaging the corresponding lowerfeed roller from saiddrivingmeans, and connections between said roller elevating means and said spindle arresting means V i 7. 5. In -a twisting machine for yarns and the ;like,;'in,combin ation, an upper series, of feed rollers ,andrai co -a cting:lower' series of feed =,rollers, a beam supporting said feed rollers, a series 7 of rotary. spindles located above both said series of feed rollers, a series of rotary spindles a, located below both saidseries of feed rollers, bobbins on said rotary spindles, means for, arresting rotation of said spindles, each of said feed rollers being unobstructed by a bearing at one end and each being disposed with its axis at an angle to said beam, driving means for said lower feed rollers, said lower feed rollers being disengageable from said driving means, sald yarns being wrapped round said lower feed rollers, means for elevating each of said upper feed rollers and forsimultaneously disengaging the corresponding lower feed roller from said driving means, and adjustable connections between said roller elevating means and said spindle arresting means. I

V 6.- A twisting machine for yarns and the Ilike,including rotary spindles carrying bobbins, means forbrakingsaid spindles, a series of individual upper feed rollers and a coacting series of individual lower feed rollbraking' 'means jall -'of said 1 feed rollersbeing open-endedtowards the front of 'the machine, -=s aid yarns being wrapped "round said lowerfeed Tellers, and means- -to disengage each of said lower 'feedrollers from its appropriatedriving means and to stop said rollersimultaneOusIy with the elevation 0f the-corresponding upperfeed roller;

7. twisting machine 'for yarns and the like-embodying a series of spindle units, each spindle Eunit comprising, a" pair of rotary spindles each carrying a bobbin, braking feed roller on completion of said wrapping on of said yarn, the stopping and re-starting of the-spindle unit being effected by the manipulation of said lever. 1

' In testimony whereof he aflixes his signa-" ture.

' WlLLiAM HAINSWORTH WATSON.

means for said pair 'of spindlespan openended upper 'feedroller, and a positively- :wl driven -opeI'i-endedjlower-feed {roller} one of said 1 spindles being located before said -feed j rollers and one of said spindles being 'logated after said feed rollers, characterized by'means forstoppingsimultaneously all the 2 elements comprising any spindle unit to en- ;able'yar n to be wrapp'ed' on 'theilowerfeed roller and kfor fre st ai-tingall said elements j simultaneously after; cem iegi a of isaid i twisting machine for yarnsandthe i n e'emma ing a series otspindlje units, each spindle i'1nit comprising, ;a rotary spindle carrying a bobbin,braking-meansfor said spindle," an open-ended. upper l feed 'roller, and a; positively driven open-endedfl lower feed roller, the axes'of said feed rollers-proje cting forwardly ofthemachine,characterized by a lever for elevatingsaidupper iced v unit being-efie cted by the manipulation of said lever.

9. A twisting machine for yarns and the like embodying a series of spindle units, each spindle unit comprising, a pair of rotary m spindles each carrying a bobbin, braking means for said pair of spindles, an openended upper feed roller, and a positively drivenopen-ended lower feed roller, oneof .said spindles being located before said feed rollers and one of said spindles being located after said feed rollers, the axes of said feed rollers projecting forwardly of the machine, characterized by a lever for elevating said upper feed roller from contact with said lower feed roller, means for stopping simultaneously all the elements comprising any spindle unit to enable yarn to be wrapped on the lower feed roller, means for maintaining said upper feed roller positively in anfelev'ated position during said wrapping on if i yarn, and means'd'tor releasing said upper froller from contact with said lower feed roll- 

